It being not waterproof/waterresistant (unless painted) doesn't seem to make it a good glass replacement for windows, though.
Possibly as an inner pane(s) of sealed multi-pane windows (with traditional glass on the outside) as - also - since it can be cut with ordinary rotary tools, it probably is not scratch resistant.
The light weight seems to me like the most relevant feature.
Seems even more useful than its weight. There is a lot of energy loss from the windows of buildings. Would be a huge gain if that can be brought down significantly.
Someone mentioned that this isn't weatherproof, but it could still be used for the inside plies of a triple glazed window for instance.
Imagine leaving a house unattended in a humid or rainy area for one year, you would come back to swollen up windows which I am sure are far from clear. I guess you would have to replace these windows at least 5-10 times as often as regular glass. Also, glass is 100% recyclable whereas this would produce even more plastic waste.
Yep, not much different from:
>Possibly as an inner pane(s) of sealed multi-pane windows (with traditional glass on the outside)
I mean, what is the "Or,"?